it says staff at the national security agency are not just intercepting calls but also tracking the movements of phones around the world. the paper cites documents leaked by former nsa contractor edward snowden. it says agents collect 5 billion records every day on cell phones across the planet. the report says agents use that information to track people of interest and identify their associates. u.s. government officials say nsa personnel are trying to prevent terrorism and only monitoring non-americans. >>> the pris tij ous hotel in prag has turned a secret cold war underground bunker into a tourist destination. the aim is to show visitors how it was once used as a center for spy operations. the alta hotel recently opened the bunker to mark its 55th anniversary. during the cold war the luxury hotel was a popular destination for both western tourists and journalists. hidden 20 meters under ground it can only be reached by ladder. a hotel official says only a few knew it ever existed. on display is some original spy equipment such as a tape recorder for listening on each of the hotel's 94 roo